Use sendWithAsyncReply instead of AttributedStringForCharacterRangeCallback and FontAtSelectionCallback
Created attachment 417040 [details] Patch
Comment on attachment 417040 [details] Patch r=me
Committed r271187: <https://trac.webkit.org/changeset/271187> All reviewed patches have been landed. Closing bug and clearing flags on attachment 417040 [details].
<rdar://problem/72838316>